Process of producing prints on metal



PATENT OFFICE.

PHILO V. SNOW, 01? DALLAS, TEXAS.

PROCESS OF PRODUCING PRINTS ON METAL.

No Drawing.

To all whom it may concern Be it known that I, PHILO V. Snow, a citizen of the United States, residing at Dallas, in the county of Dallas and State of Texas, have invented certain new and useful Improvements in Processes of Producing Prints on Metal, of which the following is a specification.

This invention relates D improvements in photographic processes.

The invention has particularly to do with printing from negatives directly on sensitized metal and treating the metal print so as to produce a highly artistic and pleasing piece of work having individuality, radiance and color value.

In carrying out the process a negative as for instance a half-tone negative, is first made. A sheet of metal such as polished copper, brass, gold or the like is burnished and treated to remove grain, spots. etc., and is given a dull polish. This plate is coated with a suitable sensitizing solution. The print is dyed, cleaned. polished and lacquered to preserve its finish and make it permanent. During the processthe high lights of the picture or photograph are burnished to intensify the same and lend to the artistic beauty of the work.

Prints have been made on sensitized metal for a long time, but so far as I am aware no one has dyed these arint, removed the dye stains, burnished the high lights, polished the dyed print and lacquered it to make it permanent. Prints made by this process give a has-relief effect to the subject and have a depth and radiance of tone, not seen in any other photographic prints.

The invention will be more readily understood from a reading of the following specification.

In producing a print under this process a half-tone negative is first made from a photograph, wash drawing or other pictorial representation. The method of producing a half-tone negative is so well understood in this art as not to require explanation. I

.The second step is to make a print from the negative on sensitized metal. Sheets of metal such as copper, brass and goldplate are used. The metal must be clean to new and useful printing Specification of Letters Patent.

Application filed September 11, 1919.

Patented July 13, 1920.

Serial No. 323,121.

and free from blemishes. All such metal has a grain. Before the metal is coated it is thoroughly cleaned with a wire brush to remove stains, spots and the grain, and is given a dull polish. The metal is then evenly coated with a sensitizing solution in the usual manner. The sensitizing solution or enamel must be of such quality to be tough and withstand rubbing. The print is made by exposing the sensitized side of the metal sheet to the negative.

The third. step consists in developing the metal print in a suitable developing bath.

The fourth step is to dye the print with a suitable dye of the desired. color, such as anilin dye.

The next or fifth step includes removing the streaks and stains left by the dye. While the surface is still wet it is rubbed with a piece of cotton batting until the stains and streaks are removed and an even tone or shade is had.

The sixth step consists in drying the print and this is accomplished by laying thereon a sheet of chamois skin and squeegeeing the same until substantially dry; after which the chamois skin is removed.

The seventh step has to do with the polishing of the print. It will be understood that after the print is dyed and dried it is more or less dull and flat. I prepare a mixture of substantially four parts of powdered charcoal and one part of pumice stone, which mixture is applied in a dry state to the print and the latter rubbed down with a piece of cotton batting until the desired smoothness and relief effect is had. In some instances the high lights are burnished to a greater extent to completely remove the dots of the half-tone print, whereby the said high lights are intensified and the print given greater contrast and luster.

The eighth step consists in cleaning the print and giving the same a final polish with a clean sheet of chamois. The surface is brought to a very high polish and lends depth and tone to the production.

The ninth and final step resides in coating the print with a suitable preservative to prevent oxidizatio-n and deterioration. This may be accomplished by spraying with a suitable lacquer or by dipping the metal plate in the lacquer.

After the print is complete it may be framed or mounted on a suitable backing and will provide a lasting and substantial picture of a pleasing and beautiful character.

hat I claim, is:

1. In a process for producing photographic prints on metal which includes making a negative, printing from said negative or a sensitized sheet of metal, developing the print, dyeing-the print, removing stains and streaks from dyed print, polishing print, and coating the print with a preservative.

2. The steps in the process of producing photographic prints on metal, which consists in dyeing the metal print, removing the dye stains and streaks and giving the print an even tone by rubbing with, soft material, while the print is wet, and dyeing the print in a suitable manner.

3. The steps in the process of producing photographic prints on metal, which consists in dyeing the metal print, removing the dye stains and streaks and giving the print an even tone by rubbing with soft material While the print is wet, drying the print in a suitable manner, and polishing the print with a dry mixture of abrading materials applied by a soft fibrous material.

i. The steps in the process of producing photographic prints on metal, Which consists in dyeing the metal print, removing the dye stains and streaks and giving the print an even tone by rubbing with soft material while the print is wet, drying the print in a suitable manner, and polishing the print with a dry mixture of pumice stone and charcoal applied with a piece of cotton batting.

5. The steps in the process of producing photographic prints on metal, which includes printing from a negative on a sea sitized sheet of metal, the metal being coated with a sensitizing solution capable of Withstanding brisk rubbing and abrading, dye ing the print, rubbing the dyed print to remove uneven tones and shades while the same is Wet, dyeing the print, and polishing the print.

6. The steps in the process of producing photographic prints on metal, which includes printing from a negative on a sensitized sheet of metal, the metal being coated with a sensitizing solution capable of withstanding brisk rubbing and abrading, dyeing the print, rubbing the dyed print to remove uneven tones and shades While the same is wet, drying the print, polishing the print to give luster and relief, and burnishing the high-lights to a greater degree to intensify the same.

7. In a process for producing photographic prints on metal which includes making a negative, printing on a sensitized metal plate Which has been cleaned and smoothed before being sensitized, developing the print, dyeing the print, removing stains and streaks from the dyed print, drying the print, burnishing the print with suitable materials, intensifying the highlights, rubbing the print to produce a final polish, and coating the print with a preserving lacquer.

In testimony whereof I affix my signature.

PHILO V. SNOW. 

